NSX: fix error when creating VM ports on subnets without dhcp

The error was caused by a missing LSN port (which is created when
the subnet is setup with dhcp enabled). Therefore, check the port
is in place before proceeding with the setup.

Change-Id: I658ead0c324a24ad3f061844ecac13cd3359d341
Closes-bug: 1316365

diff --git a/neutron/plugins/vmware/dhcp_meta/lsnmanager.py b/neutron/plugins/vmware/dhcp_meta/lsnmanager.py
index d5ba9db2dbeddb6bda799d3edeac12c8a4391bb3..1e8f9cb552c084761411861118c554a87be373eb 100644 (file)
--- a/neutron/plugins/vmware/dhcp_meta/lsnmanager.py
+++ b/neutron/plugins/vmware/dhcp_meta/lsnmanager.py
@@ -296,12 +296,11 @@ class LsnManager(object):
             self.lsn_port_dispose(context, network_id, const.METADATA_MAC)
 
     def _lsn_port_host_conf(self, context, network_id, subnet_id, data, hdlr):
-        lsn_id = None
-        lsn_port_id = None
+        lsn_id, lsn_port_id = self.lsn_port_get(
+            context, network_id, subnet_id, raise_on_err=False)
         try:
-            lsn_id, lsn_port_id = self.lsn_port_get(
-                context, network_id, subnet_id)
-            hdlr(self.cluster, lsn_id, lsn_port_id, data)
+            if lsn_id and lsn_port_id:
+                hdlr(self.cluster, lsn_id, lsn_port_id, data)
         except (n_exc.NotFound, api_exc.NsxApiException):
             LOG.error(_('Error while configuring LSN '
                         'port %s'), lsn_port_id)

diff --git a/neutron/tests/unit/vmware/test_dhcpmeta.py b/neutron/tests/unit/vmware/test_dhcpmeta.py
index ee9d9e477f6208e4964d5717b79e4fe2702b5940..dd438730148a9684c72f6548466fe32b290afb3d 100644 (file)
--- a/neutron/tests/unit/vmware/test_dhcpmeta.py
+++ b/neutron/tests/unit/vmware/test_dhcpmeta.py
@@ -666,14 +666,10 @@ class LsnManagerTestCase(base.BaseTestCase):
 
     def test_lsn_port_host_conf_lsn_port_not_found(self):
         with mock.patch.object(
-            self.manager,
-            'lsn_port_get',
-            side_effect=p_exc.LsnPortNotFound(lsn_id=self.lsn_id,
-                                              entity='subnet',
-                                              entity_id=self.sub_id)):
-            self.assertRaises(p_exc.PortConfigurationError,
-                              self.manager._lsn_port_host_conf, mock.ANY,
-                              self.net_id, self.sub_id, mock.ANY, mock.Mock())
+            self.manager, 'lsn_port_get', return_value=(None, None)) as f:
+            self.manager._lsn_port_host_conf(
+                mock.ANY, self.net_id, self.sub_id, mock.ANY, mock.Mock())
+            self.assertEqual(1, f.call_count)
 
     def _test_lsn_port_update(self, dhcp=None, meta=None):
         self.manager.lsn_port_update(